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These honeybees lay eggs without mating

May 8th, 2020 at 9:10 PM
science news
  • Cape honey bees in South Africa reproduce without sex, and are even capable of producing female larvas that become queens.
  • Researchers have pinpointed the gene responsible for this incredible reproductive power, and hope to use it against the bees, which frequently drive away other bee species.
  • Going forward, the power to control the ability of an animal species to reproduce without sex could have major implications in many fields.
  • Visit BGR’s homepage for more stories.

Honeybee populations around the world are suffering due to what scientists believe is a mix of factors related to climate change and the widespread use of chemicals and pesticides. It’s not a good situation, and we need the insects to do their vital work as pollinators, so we should be doing everything we can to ensure that healthy numbers of honeybees remain.

The Cape honey bees of South Africa have long since taken matters into their own hands by reverting to asexual reproduction. The bees are capable of reproducing without sex, and researchers have long wondered what specific genetic quirk is responsible for this incredible ability. Now they know.

In a new paper published in Current Biology, researchers from the University of Sydney reveal the secret to the bees’ reproductive power: a gene called GB45239 on chromosome 11. Now, that doesn’t mean all that much to you or me, but it’s a very big deal for scientists studying the bees, which have a habit of driving away other honeybee species.

“Sex is a weird way to reproduce and yet it is the most common form of reproduction for animals and plants on the planet,” Professor Benjamin Oldroyd, co-author of the research, said in a statement. “It’s a major biological mystery why there is so much sex going on and it doesn’t make evolutionary sense. Asexuality is a much more efficient way to reproduce, and every now and then we see a species revert to it.”

These Cape honey bees have done just that, and it’s given them a serious edge. Unfortunately, it’s also posing a big problem for other bee species. The male bees are “mostly useless,” but female worker bees can produce female offspring on their own, meaning queens. The ability to reproduce asexually allows the bees to invade other bee colonies and essentially take them over.

Knowing what gene allows the bees to reproduce without sex could have major implications in other areas as well, including pest control. “If we could control a switch that allows animals to reproduce asexually, that would have important applications in agriculture, biotechnology, and many other fields,” Professor Oldroyd said. “For instance, many pest ant species like fire ants [reproduce asexually], though unfortunately, it seems to be a different gene to the one found in Capensis.”

Mike Wehner has reported on technology and video games for the past decade, covering breaking news and trends in VR, wearables, smartphones, and future tech.

Most recently, Mike served as Tech Editor at The Daily Dot, and has been featured in USA Today, Time.com, and countless other web and print outlets. His love of reporting is second only to his gaming addiction.




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